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IMPACT TESTINGIMPACT TESTING
Charpy & Izod MethodsCharpy & Izod Methods
1
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PATAH GETAS & PATAH ULETPATAH GETAS & PATAH ULET
2
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IZOD
3
CHARPY
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UKURANUKURAN
Ductile to brittle transition tem erature DBTTDuctile to brittle transition tem erature DBTT
FENOMENAFENOMENA
Material ulet mengalamiMaterial ulet mengalami patah getaspatah getas
Laju pembebanan/peregangan tinggiLaju pembebanan/peregangan tinggi Temperatur rendahTemperatur rendah
4
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5
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PersentasePersentase enisenis ermukaanermukaan atahatah:: MengukurMengukur dandan menghitungmenghitung luasluas permukaanpermukaan patahpatah getasgetas
MembandingkanMembandingkan dengandengan standarstandar permukaanpermukaan patahanpatahan
6
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Lateral ex ansionLateral ex ansion
7
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Shear fracture fibrous areaShear fracture fibrous area
8
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TEMPERATUR TRANSISI:TEMPERATUR TRANSISI: Temperatur pada Energi Impak tertentu (mis. 20 J)Temperatur pada Energi Impak tertentu (mis. 20 J)
Temperatur pada penampakan permukaan patahan tertentu (mis. 50 % ulet)Temperatur pada penampakan permukaan patahan tertentu (mis. 50 % ulet)
Tem eratur ada kondisi dimulai ter adi 100% atah ulet konservatif Tem eratur ada kondisi dimulai ter adi 100% atah ulet konservatif
9
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VISUAL &VISUAL & SEMSEM EXAMINATIONEXAMINATION
CHARPY IMPACT TEST : DUCTILE TO BRITTLE TRANSITIONCHARPY IMPACT TEST : DUCTILE TO BRITTLE TRANSITION
10
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VISUAL &VISUAL & SEMSEM EXAMINATIONEXAMINATION
11
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